<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <div class="box1">
        <el-button type="primary" @click="addCatDialogVisible"
          >添加分类</el-button
        >
      </div>
      <!-- 表格区域 -->
      <tree-table
        :data="goodsCateList"
        :columns="columns"
        :selection-type="false"
        :expand-type="false"
        show-index
        border
        :show-row-hover="false"
      >
        <!-- 是否有效模板列 -->
        <template slot="isok" slot-scope="scope">
          <i
            class="el-icon-success"
            v-if="scope.row.cat_deleted === false"
            style="color: lightgreen"
          ></i>
          <i class="el-icon-error" v-else></i>
        </template>
        <!-- 排序模板列 -->
        <template slot="order" slot-scope="scope">
          <el-tag type="success" v-if="scope.row.cat_level === 0">一级</el-tag>
          <el-tag type="warning" v-else-if="scope.row.cat_level === 1"
            >二级</el-tag
          >
          <el-tag type="danger" v-else="scope.row.cat_level === 2">三级</el-tag>
        </template>
        <!-- 操作模板列 -->
        <template slot="operate">
          <el-button type="primary" icon="el-icon-edit" size="mini"
            >编辑</el-button
          >
          <el-button type="danger" icon="el-icon-delete" size="mini"
            >删除</el-button
          >
        </template>
      </tree-table>
      <!-- 页码区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 8, 10, 12]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <el-dialog
      title="添加分类"
      :visible.sync="catDialogVisible"
      width="50%"
      @close="addCatDialogClose"
    >
      <el-form
        :model="addCatForm"
        :rules="addCatFormRules"
        label-width="100px"
        ref="addCatFormRef"
        class="demo-ruleForm"
      >
        <el-form-item label="分类名称:" prop="cat_name">
          <el-input v-model="addCatForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="父级分类:">
          <!-- 级联选择器展示父级分类 -->
          <!-- options指定数据源 -->
          <!-- props指定配置对象 -->
          <el-cascader
            v-model="selectKeys"
            :options="parentCateList"
            :props="cascaderProps"
            @change="parentCateChange"
            clearable
          ></el-cascader>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="catDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数
      queryInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5,
      },
      // 商品分类的数据
      goodsCateList: [],
      total: 0,
      columns: [
        {
          label: '分类名称',
          prop: 'cat_name',
        },
        {
          label: '是否有效',
          // 定义当前列为模板列
          type: 'template',
          // 当前列使用的模板名称
          template: 'isok',
        },
        {
          label: '排序',
          // 定义当前列为模板列
          type: 'template',
          // 当前列使用的模板名称
          template: 'order',
        },
        {
          label: '操作',
          // 定义当前列为模板列
          type: 'template',
          // 当前列使用的模板名称
          template: 'operate',
        },
      ],
      catDialogVisible: false,
      // 添加分类的表单数据
      addCatForm: {
        cat_name: '',
        cat_pid: 0,
        cat_level: 0,
      },
      addCatFormRules: {
        cat_name: [
          { required: true, message: '请输入分类名称', trigger: 'blur' },
        ],
      },
      parentCateList: [],
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        checkStrictly :true
      },
      // 选中的父级分类id数据
      selectKeys: [],
    }
  },
  created() {
    this.getGoodCateList()
  },
  methods: {
    async getGoodCateList() {
      const { data: res } = await this.axios.get('categories', {
        params: this.queryInfo,
      })
      if (res.meta.status != 200) {
        return this.$message.error('获取商品分类数据失败')
      }
      console.log(res.data)
      this.goodsCateList = res.data.result
      this.total = res.data.total
    },
    handleSizeChange(currentSize) {
      this.queryInfo.pagesize = currentSize
      this.getGoodCateList()
    },
    handleCurrentChange(currentPage) {
      this.queryInfo.pagenum = currentPage
      this.getGoodCateList()
    },
    // 添加分类对话框的显示控制
    addCatDialogVisible() {
      this.getParentCateList()
      this.catDialogVisible = true
    },
    // 获取父级分类商品列表
    async getParentCateList() {
      const { data: res } = await this.axios.get('categories', {
        params: { type: 2 },
      })
      if (res.meta.status != 200) {
        return this.$message.error('获取数据失败')
      }
      this.parentCateList = res.data
      // console.log(res)
    },
    // 父级分类选择框变化控制方法
    parentCateChange() {
      // console.log(this.selectKeys)
      if (this.selectKeys.length > 0) {
        this.addCatForm.cat_level = this.selectKeys.length
        
          this.addCatForm.cat_pid = this.selectKeys[this.selectKeys.length - 1]
       
        return
      } else {
        this.addCatForm.cat_pid = 0
        this.addCatForm.cat_level = 0
      }
      console.log(this.addCatForm)
    },
    // 点击确定按钮添加分类
     addCate() {
       this.$refs.addCatFormRef.validate(async (valid) => {
         if(!valid){
           return
         }
         const { data: res } = await this.axios.post(
          'categories',
          this.addCatForm
        )
        if (res.meta.status != 201) {
          return this.$message.error('添加失败')
        }
        this.getGoodCateList()
        this.catDialogVisible = false
        this.$message.success('添加成功')
       })
        
        // console.log(res)
      
    },
    // 关闭对话框重置表单
    addCatDialogClose() {
      this.$refs.addCatFormRef.resetFields()
      this.selectKeys = []
      this.addCatForm.cat_pid = 0
      this.addCatForm.cat_level = 0
    },
  },
}
</script>

<style>
.box1 {
  margin-bottom: 20px;
}
</style>
